CVE-2011-1751 (GCVE-0-2011-1751)

Vulnerability from cvelistv5 – Published: 2012-06-21 15:00 – Updated: 2024-08-06 22:37
VLAI
Summary
The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to "active qemu timers."
Severity
No CVSS data available.
CWE
  • n/a
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1039 records in the last 180 days details
References
URL Tags
http://www.openwall.com/lists/oss-security/2011/05/19/2 mailing-listx_refsource_MLIST
http://rhn.redhat.com/errata/RHSA-2011-0534.html vendor-advisoryx_refsource_REDHAT
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3B… x_refsource_CONFIRM
http://secunia.com/advisories/44648 third-party-advisoryx_refsource_SECUNIA
http://www.osvdb.org/73395 vdb-entryx_refsource_OSVDB
http://secunia.com/advisories/44393 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/44658 third-party-advisoryx_refsource_SECUNIA
https://hermes.opensuse.org/messages/8572547 vendor-advisoryx_refsource_SUSE
http://lists.nongnu.org/archive/html/qemu-devel/2… mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/47927 vdb-entryx_refsource_BID
https://github.com/nelhage/virtunoid x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=699773 x_refsource_MISC
http://secunia.com/advisories/44458 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/44660 third-party-advisoryx_refsource_SECUNIA
http://blog.nelhage.com/2011/08/breaking-out-of-kvm/ x_refsource_MISC
https://www.ubuntu.com/usn/USN-1145-1/ vendor-advisoryx_refsource_UBUNTU
http://secunia.com/advisories/44900 third-party-advisoryx_refsource_SECUNIA
http://lists.opensuse.org/opensuse-updates/2011-0… vendor-advisoryx_refsource_SUSE
Date Public
2011-03-27 00:00
Show details on NVD website
To clipboard 

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                "negate": false,
                "operator": "OR"
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        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to \"active qemu timers.\""
          },
          {
            "lang": "es",
            "value": "La funci\u00f3n pciej_write en hw/acpi_piix4.c en la emulaci\u00f3n de PIIX4 Power Management en qemu-kvm no comprueba si un dispositivo es conectable en caliente antes de desconectar el puente PCI-ISA, lo que permite causar una denegaci\u00f3n de servicio y posiblemente ejecutar c\u00f3digo de su elecci\u00f3n a los usuarios privilegiados invitados mediante el env\u00edo de un valor espec\u00edfico al puerto I/O 0xae08 (PCI_EJ_BASE), lo que provoca a un uso despu\u00e9s de liberaci\u00f3n relacionado con \"temporizadores qemu activos\"."
          }
        ],
        "id": "CVE-2011-1751",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "ADJACENT_NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 7.4,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:A/AC:M/Au:S/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 4.4,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2012-06-21T15:55:09.613",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "http://blog.nelhage.com/2011/08/breaking-out-of-kvm/"
          },
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        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
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      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-06-27T15:18:55+00:00",
      "cve": "CVE-2011-1751",
      "id": "CVE-2011-1751",
      "initial_release_date": "2011-05-18T00:00:00+00:00",
      "product_status:fixed": "20",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "qemu: acpi_piix4: missing hotplug check during device removal",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-1751.json",
      "version": "3"
    }
  }
}



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